Neptune ehf has awarded RESON a contract to supply a dual-frequency SeaBat 7125-SV multibeam echosounder, with a POS MV 320 motion sensor. The system is designed to be used for shallow water hydrographic surveys from the MV Poseidon. The system offers cost-effective, fast and reliable operations with ultra wide swath coverage and excellent submarine date collection.
The SeaBat 7125 SV (for Surface Vessel) is a high-resolution multibeam sonar system that measures relative water depths over a 140° wide swath perpendicular to the vessels track. The new generation system offers a number of new and unique features including the ability to operate at two frequencies, 200kHz for long-range functionality and 400kHz for higher resolution. The system incorporates advanced diagnostics which increases survey efficiency.
The POS MV 320 E is a tightly-coupled positioning and motion reference system. The system provides accurate attitude, heading, heave, position, and velocity data, representing the latest in state-of-the-art inertial / GPS technology. The system maintains positioning accuracy under the most demanding conditions. The real-time data, including True Heave, can be used to produce high quality DTM's offshore, while post-processed Statistical Best Estimate Trajectory (SBET) data can be used to correct problems encountered during acquisition. A key component of the system is its Inertia Measurement Unit (IMU). The IMU contains 3 high quality gyroscopes and 3 high quality accelerometers. The IMU is entirely solid state for high reliability and is housed in its own rugged, water and salt resistant case. The IMU eliminates the need for often lengthy calibrations once the initial calibration has been completed; this offers the client an exceptional time and cost effective solution.
